How do you initialize an N*M matrix with certain N*1 vector?

I had a martix N*M matrix, I try to init matrix with an vector. I am doing with code which below.

signal=zeros(5,4);

vectorA=[1 2 3 4];

for k=1:5

signal(k,:)=vectorA;

end

Is there better way to a work this code ?

[Askic V]

Please, heave a look at function repmat:

https://www.mathworks.com/help/matlab/ref/repmat.html

Answer 1

[Dyuman Joshi]

You can use repmat()

signal=zeros(5,4);
vectorA=[1 2 3 4];
for k=1:5
signal(k,:)=vectorA;
end
signal

signal = 5×4

1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4

y=repmat(vectorA,5,1)

y = 5×4

1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4

[Emre Doruk]

Is it still faster after codegeneartion to C?

[Dyuman Joshi]

I'm sorry but I don't have any idea about that.